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Página principal > Artículos > Artículos publicados > Electrodeposited Ni-based magnetic mesoporous films as smart surfaces for atomic layer deposition: an 'all-chemical' deposition approach toward 3D nanoengineered composite layers |
Fecha: | 2018 |
Resumen: | Mesoporous Ni and Cu-Ni (Cu₂₀Ni₈₀ and Cu₄₅Ni₅₅ in at. %) films, showing a three-dimensional (3D) porous structure and tunable magnetic properties, are prepared by electrodeposition from aqueous surfactant solutions using micelles of P-123 triblock copolymer as structure-directing entities. Pores between 5 and 30 nm and dissimilar space arrangements (continuous interconnected networks, circular pores, corrugated mesophases) are obtained depending on the synthetic conditions. X-ray diffraction studies reveal that the Cu-Ni films have crystallized in the face-centered cubic structure, are textured, and exhibit certain degree of phase separation, particularly those with a higher Cu content. Atomic layer deposition (ALD) is used to conformally coat the mesopores of Cu₂₀Ni₈₀ film with amorphous Al₂O₃, rendering multiphase "nano-in-meso" metal-ceramic composites without compromising the ferromagnetic response of the metallic scaffold. From a technological viewpoint, these 3D nanoengineered composite films could be appealing for applications like magnetically actuated micro/nanoelectromechanical systems (MEMS/NEMS), voltage-driven magneto-electric devices, capacitors, or as protective coatings with superior strength and tribological performance. |
Ayudas: | European Commission 665919 European Commission 648454 Ministerio de Economía y Competitividad MAT2017-86357-C3-1-R Ministerio de Economía y Competitividad SEV-2015-0496 Ministerio de Economía y Competitividad RYC-2013-12448 Ministerio de Economía y Competitividad RYC-2012-10839 and Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-292 Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-1519 Agència de Gestió d'Ajuts Universitaris i de Recerca 2014/SGR-1015 |
Derechos: | Tots els drets reservats. |
Lengua: | Anglès |
Documento: | Article ; recerca ; Versió sotmesa a revisió |
Materia: | Atomic layer deposition ; Magnetic properties ; Mesoporous films ; Nanoengineered composites ; Surfactant-assisted electrodeposition |
Publicado en: | ACS applied materials & interfaces, Vol. 10 (April 2018) , p. 14877-14885, ISSN 1944-8252 |
Preprint 32 p, 1.7 MB |